干旱区生态环境知识资源中心(Arid): Vegetation coverage change and its response to topography in a typical karst region: the Lianjiang River Basin in Southwest China

Arid

DOI	10.1007/s12665-019-8218-z
	Vegetation coverage change and its response to topography in a typical karst region: the Lianjiang River Basin in Southwest China
	Zhou, Qiuwen 1; Wei, Xiaocha 1; Zhou, Xu 1; Cai, Mingyong 2; Xu, Youxia 1
通讯作者	Zhou, Qiuwen
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2019
卷号	78 期号:6
英文摘要	Karst areas are usually ecologically fragile complex terrains, where the topography considerably affects vegetation coverage. Although the relationship between vegetation and topography has been studied extensively, this relationship is not well understood in the karst areas. In this study, vegetation coverage was estimated in a typical karst basin for the years 1995, 2005, and 2016, using remote sensing data and the dimidiate pixel model. The spatial-temporal variation in vegetation coverage and its response to topography were quantitatively analyzed. Overall, the results showed that the vegetation coverage in this region increased from 1995 to 2016. The area under extremely high vegetation coverage increased from 26.6 to 56.0%, while vegetation coverage levels decreased in all other areas. Moreover, vegetation coverage varied with topography. It first increased with elevation but then continuously decreased, and the decrease in vegetation coverage was the most obvious on the steeper slopes. Vegetation coverage was higher with sunny aspects than with shady ones. The effects of ecological restoration were apparent in the Lianjiang River Basin from 1995 to 2016, especially on the sunny aspects at elevations between 650 and 1100m and with a slope steepness <30 degrees. The results will help us identify the influencing factors and build models to predict soil loss from forests with little understory vegetation in the red soil region of China. They also improve our understanding of the effect of topography on vegetation coverage in the karst areas. Accordingly, appropriate vegetation restoration measures can be taken for varied terrains.
英文关键词	Vegetation coverage Topography Elevation Slope steepness Aspect Remote sensing Karst
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000460829600011
WOS关键词	ROCKY DESERTIFICATION ; LAND-USE ; ENVIRONMENTAL-FACTORS ; ELEVATION GRADIENTS ; SPECIES RICHNESS ; BETA-DIVERSITY ; SOIL-MOISTURE ; PLANT ; PATTERNS ; FORESTS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215403
作者单位	1.Guizhou Normal Univ, Sch Geog & Environm Sci, Guiyang, Guizhou, Peoples R China; 2.Minist Environm Protect, Satellite Environm Ctr, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Qiuwen,Wei, Xiaocha,Zhou, Xu,et al. Vegetation coverage change and its response to topography in a typical karst region: the Lianjiang River Basin in Southwest China[J],2019,78(6).
APA	Zhou, Qiuwen,Wei, Xiaocha,Zhou, Xu,Cai, Mingyong,&Xu, Youxia.(2019).Vegetation coverage change and its response to topography in a typical karst region: the Lianjiang River Basin in Southwest China.ENVIRONMENTAL EARTH SCIENCES,78(6).
MLA	Zhou, Qiuwen,et al."Vegetation coverage change and its response to topography in a typical karst region: the Lianjiang River Basin in Southwest China".ENVIRONMENTAL EARTH SCIENCES 78.6(2019).